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Monkeys don't enjoy or appreciate flavours. Experts have told us that human beings are the only beings that can appreciate food at this higher level and the only living beings that cook.

We need to boost our intake of healthy plant foods and reduce our dependence on animal-based foods.

We can understand, too, that natural species are chosen not because they are 'good to eat' but because they are 'good to think.'

In terms of sustainability and what we eat and what its footprint is on the environment and the consequences of eating one thing versus another, obviously it makes a lot of sense to be eating insects. They're incredibly plentiful. They've got a very short turnover rate. You could be eating termites.

Nature favors those organisms which leave the environment in better shape for their progeny to survive.

Animals' taste systems are specialized for the niche they occupy in the environment. That includes us. As hunters and foragers of the dry savannah, our earliest forebears evolved a taste for important but scarce nutrients: salt and high-energy fats and sugars. That, in a nutshell, explains the widespread popularity of junk food.

Meat supplies a variety of nutrients - among them iron, zinc, and Vitamin B12 - that are not readily found in plants. We can survive without it; millions of vegetarians choose to do so, and billions of others have that choice imposed upon them by poverty.

As people around the world become more affluent, they are demanding diets richer in animal protein, which will require ever more robust feed crop yields to sustain.

Food for the body is not enough. There must be food for the soul.